论文标题
无需IR发散的计算，该过程的最终状态辐射的软光子高能限制$ e^{+} e^{ - } \rightarrowμ^{+}μ^{ - }γ$
Calculation without IR divergence of the soft photon high energy limit of final state radiation for the process $e^{+}e^{-}\rightarrowμ^{+}μ^{-}γ$
论文作者
论文摘要
在本文中表明，最终的状态辐射过程$ e^{+} e^{ - } \rightArrowμ^{+}μ^{ - }γ$在树级别与软光子高能量中的任何IR差异无关因此，该过程不需要与该过程相关的“红外灾难”。结果表明，实际上，该过程的最终状态光子的横截面在软光子高能极限中消失。
In this paper it is shown that the final state radiation process $e^{+}e^{-}\rightarrowμ^{+}μ^{-}γ$ at tree level is not associated with any IR divergence in the soft photon high energy limit if the calculation is done using a careful treatment of a certain distributional object (in fact, a measure) arising from the Feynman amplitude for the process. Thus there need be no "infrared catastrophe" associated with the process. It is shown that, in fact, the cross section for the final state photons for the the process vanishes in the soft photon high energy limit.
